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21754 Tvaruzkova (1999 RZ183)
Classification: Main-belt Asteroid          SPK-ID: 2021754
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1073996361212507 3.297e-08  
a 2.341857522623037 8.3824e-09 au
q 2.09034287684551 7.8248e-08 au
i 7.462030540410288 4.2409e-06 deg
node 149.4360011520427 2.8283e-05 deg
peri 268.3678470778229 3.4835e-05 deg
M 282.9372432820178 2.0463e-05 deg
tp 2459480.708413196446
(2021-Sep-23.20841320)
7.4809e-05 TDB
period 1308.998445512161
3.58
7.0281e-06
1.924e-08
d
yr
n .2750194251446538 1.4766e-09 deg/d
Q 2.593372168400565 9.2827e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1355  
   data-arc span      9773 days (26.76 yr)  
   first obs. used      1994-03-05  
   last obs. used      2020-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49737  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:54:18  

Additional Information
 Earth MOID = 1.11724 au 
 Jupiter MOID = 2.69004 au 
 T_jup = 3.545 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.12   n/a E2021B10  
diameter diameter 1.944 km 0.517 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.355   0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21754 Tvaruzkova           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Zuzana Tvaruzkova (b. 1987) was awarded first place in the 2005 Intel International Science and Engineering Fair for her botany project. She attends the Gymnazium Kromeriz, Kromeriz, Czech Republic.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050822/MPCPages.arcLast Updated: 2005-08-26

[ show close-approach data ]
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